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3 years ago

You did 110 joules of work lifting a 190 N backpack. How high did you lift the backpack?

Physics

1 answer:

Finger [1]3 years ago

7 0

The backpack has been lifted for 0.58 m

Explanation:

The work done in lifting an object is equal to the gain in gravitational potential energy of the object:

$W=mg\Delta h$

where

(mg) is the weight of the object, with

m being the mass

g being the acceleration due to gravity

$\Delta h$ is the change in height of the object

In this problem,

W = 110 J is the work done

mg = 190 N is the weight of the backpack

Solving for $\Delta h$ , we find the change in height of the backpack:

$\Delta h = \frac{W}{mg}=\frac{110}{190}=0.58 m$

Learn more about work:

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